1. Technical Field
The invention relates to electric connectors, particularly to connectors for electric power.
2. Related Art
A conventional power connector is composed of a plug and a receptacle. Such a connection interface is symmetric and has no foolproof mechanism. Misconnection tends to occur because of users' or workers' errors. Misconnection may cause serious damage for hardware and/software.
An object of the invention is to provide a power connector, which is provided with a misconnection-proof mechanism. This can prevent the connector from being erroneously connecting.
To accomplish the above object, the plug of the invention includes an insulative body having a first bar and a second bar at a space. The first bar is longitudinally formed with only one first channel for receiving a first plug terminal. The second bar is longitudinally formed with a plurality of second channels for receiving a plurality of second plug terminals. The receptacle of the invention includes an insulative seat having a first trough for connecting the first bar and a second trough for connecting the second bar. The first and second troughs are arranged at a space. The first trough is provided with only one first receptacle terminal. The second trough is provided with a plurality of second receptacle terminals which are parallel with each other and arranged at a space.
In the invention, the second bar cannot be inserted into the first trough. As a result, the plug and receptacle can be connected only in a correct direction.
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The insulative body 110 is a substantial hexahedron, which is preferably made of plastic. The insulative body 110 has a body top 111 and four body sides 112 around the body top 111. The body sides 112 perpendicularly connect to the body top 111. Two first bars 140 and a second bar 150 are extended from the body top 111. One of the body sides 112 is formed with a hooked rod 101. Preferably, the hooked rod 101 extends over the body top 111. The first bars 140 and second bar 150 are arranged at a space. The first bars 140 are cuboids. Each of the first bars 140 is longitudinally formed with only one first channel 141. Preferably, two angles of each of the first bars 140 are separately formed with two first outer chamfers 142. The second bar 150 is a cuboid. A width of at least one edge of the second bar 150 is greater than a maximum width of an edge of the first bar 140. The second bar 150 is longitudinally formed with two second troughs 151. Preferably, the two second troughs 151 are parallel with each other and arranged at a space. Two angles of each of the second bar 150 are separately formed with two second outer chamfers 152. In this embodiment, the first channels 141 and second troughs 151 are parallel. Preferably, the first channels 141 are arranged in a row and the second troughs 151 are arrange in another row.
The first and second plug terminals 120, 130 are sleeves made of metal. Each of the first plug terminals 120 is received in one of the first channels 141. Each of the second plug terminals 130 is received in one of the second troughs 151.
The receptacle 200 is used to connect the plug 100 and includes an insulative seat 210, two first receptacle terminals 220 and two second receptacle terminals 230.
The insulative seat 210 is a substantial hexahedron, which is preferably made of plastic. The insulative seat 210 has a seat top 211 and four seat sides 212 around the seat top 211. A first trough 240 for being inserted by the first bar 140 and a second trough 250 for being inserted by the second bar 150 are extended from the seat top 211. One of the seat sides 212 is formed with a hooked protrusion 201 for engaging with the hooked rod 101. The first and second troughs 240, 250 are arranged at a space and correspond to the first and second bars 140, 150. Preferably, there are two first troughs 240 and a second trough 250. Preferably, two angles of each of the first troughs 240 are separately formed with two first inner chamfers 241 corresponding to the first outer chamfers 142. Each of the second troughs 250 is longitudinally formed with two second troughs 151. Preferably, the two second troughs 151 are parallel with each other and arranged at a space. Two angles of each of the second troughs 150 are separately formed with two second inner chamfers 251 corresponding to the second outer chamfers 152.
The first receptacle terminals 220 are poles made of metal and have an outline corresponding to the first plug terminals 120. Each of the first receptacle terminals 220 is received in one of the first troughs 240.
The second receptacle terminals 230 are poles made of metal and similar to the first receptacle terminals 220 in structure. The second receptacle terminals 230 are used to connect the second plug terminals 130. The second receptacle terminals 230 are received in the second trough 250. The second receptacle terminals 230 are parallel and arranged in a row. Each of the first receptacle terminals 220 passes through the bottom of the first trough 240. Each of the second receptacle terminals 230 passes through the bottom of the second trough 250.
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Number | Name | Date | Kind |
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6196874 | Wu | Mar 2001 | B1 |
6471530 | Gimbatti et al. | Oct 2002 | B1 |
7909652 | Yang et al. | Mar 2011 | B2 |
8092261 | Lord | Jan 2012 | B2 |
8449312 | Lang et al. | May 2013 | B2 |
Number | Date | Country | |
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20150017841 A1 | Jan 2015 | US |